JPH0516472Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a fuel tank for a motorcycle.

[Prior art]

Generally, in a motorcycle, a rider switches and operates a fuel tank to supply and stop fuel from a fuel tank to an engine, and to reserve fuel.

By the way, in the case of a motorcycle in which both sides of the fuel tank are mounted above the side tank rails extending left and right rearward from the head pipe section of the vehicle body frame, the fuel tank is designed so that the fuel switching tank body takes into account the inflow of fuel. Since it is directly attached to the bottom wall of the fuel tank, it is located below the lower surface of the side tank rail and further back toward the center of the vehicle body than the side tank rail.

Therefore, in order to operate the fuel switching knob in the fuel tank, it is necessary to insert one's hand deeper into the side tank rail, especially when a rider sitting on the seat of a motorcycle operates the knob. In order to do so, it is necessary to wrap the hand around the side of the side tank rail from above and insert it deeper into the side tank rail, resulting in a decrease in operability.

[Purpose of invention]

In view of the above-mentioned circumstances, the present invention aims to provide a fuel tank for a motorcycle that can provide good operability.

[Structure of the idea]

Therefore, in the present invention, the fuel switching unit is located below the horizontal plane including the bottom surface of the side tank rail and closer to the center of the vehicle body than the inward vertical plane including the side surface of the side tank rail on the vehicle center side. The knob part for fuel switching operation is located on the outer side of the vehicle body than the outer vertical plane including the outer side surface of the side tank rail, and the extension shaft between the fuel switching knob body and the knob part is installed. The above object is achieved by providing a bendable pin joint portion located closer to the center of the vehicle body than the outer vertical plane.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention will be described in detail based on the drawing which shows one Example.

As shown in FIGS. 1 and 4, the fuel switching tank main body 2 of the fuel switch 1 related to the present invention
is directly attached to the bottom wall 20a of the fuel tank 20 via the fuel introduction pipe 3 provided at the top. In addition, the code|symbol 4 is a fuel discharge pipe extended from the fuel switching pot main body 2.

As shown in FIG. 4, the fuel switching unit 2 is located below a horizontal plane H that includes the lower surface 30a of the side tank rail 30 on which the fuel tank 20 is mounted, and It is located closer to the center of the vehicle body than the inner vertical plane V1 including the vehicle center side side surface 30b.

On the other hand, an extension shaft 5 is provided on the right side of the fuel switching pot body 2, and as is clear from the figure, the extension shaft 5 has a base shaft 6 directly connected to the fuel switching pot body 2, and a knob portion at the right end. 7, and the knob portion 7 is positioned so as to protrude outward from the vehicle body beyond the outer vertical plane V2 including the vehicle body outer side surface 30c of the side tank rail 30. ing.

In this way, the knob 7 can be operated without inserting the hand deeper than the side tank rail 30, and the switching operation of the fuel cock 1 is extremely easy.

By the way, as mentioned above, if the extension shaft 5 is arranged in the lower area of the side tank rail in order to improve the operability of the fuel tank, when the fuel tank 20 is assembled to the vehicle body frame, the extension shaft 5 is moved to the side tank rail 30. The fuel tank 20 must be placed on the side tank rail 30 while passing under the tank rail 30, which complicates the assembly work.

On the other hand, as is clear from the conceptual diagram of the motorcycle shown in FIG. 5, the fuel cock 1 provided below the fuel tank 20 as described above,
Since the fuel tank 20 is located in front of the seat 40, it is located in an area inside the legs 50a of a passenger 50 seated on the seat 40. In Fig. 5, reference numeral 30 denotes a side tank rail, 41 denotes an engine, and reference numerals 42F and 42R denote front and rear wheels.

As described above, since the fuel knob 1 is located near the leg portion 50a of the passenger 50, when the knob portion 7 protrudes outward from the vehicle body when getting on or off the vehicle or when the vehicle is running, the passenger 50 It is easy to hit the leg portion 50a of the motorcycle, which leads to a decrease in the riding comfort of the motorcycle.

Therefore, the extension shaft 5 of the fuel tank 1 described above is provided with a bendable pin connecting portion 5A, and this pin connecting portion 5A is attached to the outer side surface of the vehicle body of the side tank rail 30, as shown in FIG. 3
It is installed closer to the center of the vehicle body than the outer vertical plane V2 including 0c.

That is, at the right end of the base shaft 6, a tongue piece 9 extending in the axial direction of the base shaft 6 is protruded, while at the left end of the operating shaft 8, a supporting protrusion is provided so as to sandwich the tongue piece 9 from above and below. 10 and 11 are formed,
The base shaft 6 and the operating shaft 8 are perpendicular to the axes of the shafts 6 and 8, and the tongue piece 9 and the support protrusion pieces 10 and 1
1 and are pivotally connected by a pin 12 penetrating through the shaft 1.

Further, as shown in FIGS. 2 and 3, the operating shaft 8 is provided with a hole 13 that opens along the axis of the operating shaft 8 and on the side facing the tongue 9. An indenter 14 made of a metal ball is placed in the hole 13, and a compression coil spring 15 is interposed between the indenter 14 and the bottom wall 13a of the hole 13.

On the other hand, as shown in FIG. 3, the planar shape of the tongue piece 9 is semicircular with the pin 12 at the center, and a hemispherical recess 9a is formed at the tip. The recess 9 is centered at
Hemispherical recesses 9b and 9c are formed at 90° above and 90° below a in the figure, respectively.

In the above configuration, when the base shaft 6 and the operating shaft 8 are positioned linearly, the indenter 14 engages with the recess 9a by the biasing force of the compression spring 15, as shown in FIG. In other words, the state of use is maintained. When the knob 7 is rotated in this state, the operating force is transmitted from the operating shaft 8 to the base shaft 6 via the pin 12, and thus the fuel switching knob main body 2 is operated.

Moreover, when the operating shaft 8 and the knob part 7 are swung about the pin 12 in the direction of the arrow M or N in FIG. Similarly, indenter 14
is engaged with the recess 9b or 9c by the biasing force of the compression spring 15, and the folded state shown by the one-dot chain line or the two-dot chain line is maintained.

When assembling a motorcycle equipped with the fuel tank 1 having the above-described operating mode, especially when attaching the fuel tank 20 to the vehicle body frame,
Operating shaft 8 and knob 7 of fuel cooker 1
By bending the
Since the protruding portion from the fuel tank 20 can be kept small, the fuel tank 20 can be attached to the vehicle body frame relatively easily.

Further, after the fuel tank 20 is attached to the vehicle body frame, the operating shaft 8 and the knob 7 are unfolded from the folded state to the operating state, so that the fuel tank 1 can be easily switched and operated as described above.

Furthermore, after operating the knob part 7 in use and switching the fuel switch body 2, the knob part 7 and the operating shaft 8 can be folded, so that when getting on or off the vehicle or when the vehicle is running, In this case, the rider's legs are prevented from coming into contact with the above-mentioned knob portion 7, thereby providing good riding comfort.

Also, the knob 7 is connected to the pin connecting portion 5A.
By folding the fuel tank 1, contact between the knob 7 and the passenger is prevented.
It is also possible to freely set the installation position of the vehicle without being affected by the boarding position of the passenger.

In this example, the detent mechanism is constituted by the compression spring 15 and indenter 14 provided on the operating shaft 8, and the recesses 9a, 9b, and 9c provided in the base shaft 6, but these elements are omitted. Alternatively, the base shaft 6 and the operating shaft 8 may be firmly connected to each other so that the operating shaft 8 is held at an appropriate position according to manual operation by an operator or passenger.

[Effect of idea]

As described in detail above, in the fuel switch for a motorcycle related to the present invention, the knob for fuel switching operation is placed on the outside of the vehicle body on the side tank rail with respect to the fuel switch switch body attached to the bottom wall of the fuel tank. Since it is located on the outer side of the vehicle body than the outer vertical plane including the side surfaces, it is possible to obtain good operability without being obstructed by the side tank rails.

In addition, a pin joint part is provided on the extension shaft between the fuel switching knob body and the knob part, and is located closer to the center of the vehicle body than the above-mentioned outer vertical plane, and the knob part is folded against the fuel switching knob body. Because it is bendable, the fuel tank with the fuel handle attached can be easily assembled to the vehicle body frame, improving vehicle assembly work efficiency and preventing the knob of the fuel handle from coming into contact with the passenger. This can be prevented, and it is also possible to improve the riding comfort of the vehicle.

[Brief explanation of the drawing]

FIG. 1 is an overall side view showing a fuel tank for a motorcycle according to the present invention. FIG. 2 is a side view of the main part of the fuel tank according to the present invention, showing a broken pin connection part in the extension shaft. FIG. 3 is a plan view of the main part, similarly showing a broken pin connection part on the extension shaft.
FIG. 4 is a partially sectional side view showing the fuel tank according to the present invention and the manner in which the fuel tank is installed. FIG. 5 is a conceptual overall side view of the motorcycle showing the installation position of the fuel tank according to the present invention. 1...Fuel switch, 2...Fuel switching switch body, 5...Extension shaft, 5A...Pin connection part,
6...Base axis, 7...Knob section, 8...Operation axis, 1
2...Pin, 20...Fuel tank, 20a
...Bottom wall, 30...Side tank rail, 30a
...Bottom surface, 30b...Side surface on the center side of the vehicle body, 30c...
...Outer side surface of the vehicle body, H...Horizontal surface, V1...Inner vertical surface, V2...Outer vertical surface.

Claims (1)

[Scope of Claim for Utility Model Registration] A fuel tank for a motorcycle comprising a fuel tank mounted on side tank rails extending from the head pipe section of the body frame to the left and right rear, which is attached to the bottom wall of the fuel tank. The fuel switching device is positioned below a horizontal plane H that includes the lower surface of the side tank rail, and closer to the center of the vehicle body than an inward vertical plane V1 that includes the side surface of the side tank rail on the vehicle center side. The operating knob is attached to the outer vertical plane V2, which includes the outer side surface of the vehicle body of the side tank rail.
A bendable pin joint is provided on the extension shaft between the fuel switching knob body and the knob, and the pin joint is connected to the side tank rail of the vehicle body. A fuel tank for a motorcycle characterized by being located closer to the center of the vehicle body than an outer vertical plane V2 including an outer side surface.